Which is a source of adult stem cells?

Answers

Answer 1
Answer: They're actually in quite a few places, but I'd say you should know bone marrow as the most important one
Answer 2
Answer:

The answer is bone marrow.


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The ATP molecule shown consists of a base,__________, and a chain of three phosphates. A) cellulose B) maltose C) ribose D) sucrose
Which activity is most likely a result of a sudden, unexpected change in the environment?. . A.A snake shedding its skin. B.Birds migrating to the south. C.The extinction of a type of shrimp. D.Bears hibernating.
What does this mean Hydrogen Bonding
What happens to E. coli when lactose is not present?
Which of the following is/are author/s of American literary realist fiction? A. Mark Twain B. William Bradford C. Sarah Orne Jewett D. Charles Waddell Chesnutt

Certain diseases can be passed from mother to baby during pregnancy or breastfeeding. this type of transmission is: a. horizontal b. waterborne c. vector d. vertical

Answers

This is known as vertical transmission

Final answer:

The type of transmission for diseases passed from mother to baby during pregnancy or breastfeeding is vertical transmission.

Explanation:

During pregnancy or breastfeeding, certain diseases can be transmitted from the mother to the baby. This type of transmission is known as vertical transmission. Vertical transmission occurs when an infection is passed from a mother to her offspring during pregnancy, childbirth, or breastfeeding. It can happen through various routes, including the placenta, birth canal, or breast milk.

Vertical transmission can have significant implications for the health of the baby. Some diseases that can be vertically transmitted include HIV, hepatitis B, syphilis, and rubella. These infections can be passed from the mother to the baby either during pregnancy or through breastfeeding.

To prevent vertical transmission, it is important for pregnant women to receive appropriate prenatal care, including screening for infectious diseases. Vaccination and antiviral treatments may also be recommended to reduce the risk of transmission. Breastfeeding guidelines may vary depending on the specific infection, and healthcare providers can provide guidance on the safest approach.

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A person who is overweight or obese is most likely at risk for which disorder? Sleep disorder

Cognitive Disorder

Immune disorder

Blood disorder

Answers

The answer to this question is all of the above. 
A person who is overweight or obese is most likely at risk for:
Sleep disorder
Cognitive Disorder
Immune disorder
Blood disorder

>Obesity causes alterations to immune functions. It may also affect the brain and would likely to contribute cognitive problems. Obese people have high risks to elevated blood pressure. They also sleep less compared to those who have normal weights. 

Answer:

D.) blood disorder

Explanation:

Yes, all are correct but this one is most common.

Describe the role of a DNA helicase at a replication fork. A) DNA helicase connects the two strands of DNA at a replication fork.
B) DNA helicase helps another protein to connect the two strands of DNA at a replication fork.
C) DNA helicase helps another protein to separate the two strands of DNA at a replication fork.
D) DNA helicase separates the two strands of DNA at a replication fork.

Answers

Answer:

DNA helicase separates the two strands of DNA at a replication fork.

Explanation:

To allow DNA replication, two DNA strands should be separated to serve as a template strand. DNA helicases are the enzymes that separate the two parental DNA strands in an energy-dependent way. DNA helicases move along the DNA and separate the two strands by breaking the hydrogen bonds between the complementary base pairs of two DNA strands. The energy released from ATP hydrolysis is used to break the hydrogen bonds.

Answer:

d

Explanation:

If thermohaline circulation were blocked, perhaps by plate tectonics, what would happen?Nothing would change.

Global climate would be significantly affected.

Coastal areas would warm up.

There would be an increase in precipitation.

Answers

The answer is Global climate would be significantly affected. Themohaline circulation plays an important role in global climate. Thermohaline circulation is the flux of ocean waters and surface currents that are related with three gradient of densities. The density of sea water is determined by the content of salt. The currents of wind on the surface and of water in the oceans transport matter and energy, which translates into heat transfer; thi is the reason of the impact of the circulation on the climate. It is thought that changes in thermoline circulation will cause changes in polar sea ice, changes in Earth's radiation, changes in the concentration of carbon dioxide, and, consequently, changes in temperatures.

If thermohaline circulation were blocked, perhaps by plate tectonics, what would happen?

Global climate would be significantly affected.

which of the following shows the correct order in which genes are expressed? a. DNA to rna to proteins. b. rna to DNA to proteins. c. rna to proteins to DNA. d. DNA to proteins

Answers

Answer:

a. DNA to RNA to proteins.

Explanation:

DNA is the genetic material which is transcribed into RNA in nucleus. The mRNA leaves nucleus and joins ribosomes for the process of protein synthesis. The nucleotide sequence of mRNA serves as template for protein synthesis. Hence gene expression occurs in following direction:

DNA------> RNA--------> Protein

This unidirectional flow of genetic information is also called as central dogma.

Final answer:

The correct order in which genes are expressed is DNA to RNA to proteins.

Explanation:

The correct order in which genes are expressed is a. DNA to RNA to proteins.

During the process of gene expression, the DNA sequence is first transcribed into RNA through a process called transcription. The RNA molecule then serves as a template for protein synthesis, a process called translation, where amino acids are assembled into a polypeptide chain, forming proteins.

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Radiocarbon dating would be useful in dating the age of Earth.
True or False

Answers

The given statement is False.

Radiocarbon dating cannot be used determine the age of the earth because the earth is million years old.

Radiocarbon dating can be used only for the substance that is 100-40,000 years old.

As, the earth is older than 40,000 years of age radiocarbon dating cannot be used for substances that is this much old.

Answer:

f

Explanation: